diff options
| author | Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp> | 2014-08-11 14:43:45 +0900 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2014-08-29 10:46:57 +0100 |
| commit | 1dbfafed7f0478fde29de7b69692c4d58b9e6c25 (patch) | |
| tree | 717d270b59ef418562ce30764528931e442f1805 /block | |
| parent | 40ed35a3c4f7d26247cbbb01a2b3ff544fb50819 (diff) | |
sheepdog: adopting protocol update for VDI locking
The update is required for supporting iSCSI multipath. It doesn't
affect behavior of QEMU driver but adding a new field to vdi request
struct is required.
Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Liu Yuan <namei.unix@gmail.com>
Cc: MORITA Kazutaka <morita.kazutaka@gmail.com>
Signed-off-by: Hitoshi Mitake <mitake.hitoshi@lab.ntt.co.jp>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block')
| -rw-r--r-- | block/sheepdog.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/block/sheepdog.c b/block/sheepdog.c index 12cbd9dcb4..93c0266fea 100644 --- a/block/sheepdog.c +++ b/block/sheepdog.c @@ -103,6 +103,9 @@ #define SD_INODE_SIZE (sizeof(SheepdogInode)) #define CURRENT_VDI_ID 0 +#define LOCK_TYPE_NORMAL 0 +#define LOCK_TYPE_SHARED 1 /* for iSCSI multipath */ + typedef struct SheepdogReq { uint8_t proto_ver; uint8_t opcode; @@ -166,7 +169,8 @@ typedef struct SheepdogVdiReq { uint8_t copy_policy; uint8_t reserved[2]; uint32_t snapid; - uint32_t pad[3]; + uint32_t type; + uint32_t pad[2]; } SheepdogVdiReq; typedef struct SheepdogVdiRsp { @@ -1090,6 +1094,7 @@ static int find_vdi_name(BDRVSheepdogState *s, const char *filename, memset(&hdr, 0, sizeof(hdr)); if (lock) { hdr.opcode = SD_OP_LOCK_VDI; + hdr.type = LOCK_TYPE_NORMAL; } else { hdr.opcode = SD_OP_GET_VDI_INFO; } @@ -1793,6 +1798,7 @@ static void sd_close(BlockDriverState *bs) memset(&hdr, 0, sizeof(hdr)); hdr.opcode = SD_OP_RELEASE_VDI; + hdr.type = LOCK_TYPE_NORMAL; hdr.base_vdi_id = s->inode.vdi_id; wlen = strlen(s->name) + 1; hdr.data_length = wlen; |